Tweak Big English fundraiser copy and start time again
Tweak Big English fundraiser copy and start time again

Updated start time and added '.' at end of disclaimer.

Bug: T181004
Change-Id: I9ee81fc634364dcca4ec30cd1a31b27d9527970f

wikimedia/mediawiki-services-mobileapps,wikimedia/mediawiki-services-mobileapps,wikimedia/mediawiki-services-mobileapps,wikimedia/mediawiki-services-mobileapps,wikimedia/mediawiki-services-mobileapps,wikimedia/mediawiki-services-mobileapps